US1769333A - Portable guy clamp - Google Patents

Description

PORTABLE GUY CLAMP- Filed Aug. ,24, 1928 J v INVENTOR. j Q 1, Flea/war mcarn/vs. F a BY 3 ATTO EY5.

Patented July 1, 1930 TES tiNEiEEE sra PORTABLE GUY CLAMP Application filed August 24,,192a Serial No. serves;

I This invention relates to a wire, rope or cable clamp, and portable vise, such as set forth and described in my copending application Serial No. 277,7 49', filed May 14, 1928.

The principal'object of the invention resides in the provision of a ratchet tooth wedge associated with one of the clamping jaws, against which the wire or cable is adapted to be forced by the opposing clamping jaw in such manner as to actuate the wedge so as to increase the gripping action of the clamp and hold the cable firmly wedged as well as clamped thereby.

Another feature of the invention resides in the mounting of the wedge upon the clamping jaw in such manner that 1t may be swung out of operative position so that the jaws may be readily used without the wedge when desired. I

he full nature of the invention will be understood from the accompanying drawings and the following description and claims:

In the drawings, Fig. 1 is a perspective View of the device associated with a looped cable for drawing the looped portion thereof together. Fig. 2 is a longitudinal sectional view through the clamp. Fig. 3 is a plan view looking down on the clamp. Fig. 4 is a partial view showing the wedge in operative engagement with the cable. Fig. 5 is a partial View of the clamp with the wedge in inoperative position. j I in the drawings there is showna post 10 about which is looped a wire or cable 11 having a looped portion 12 anda free end portion 18. In mounting wires or cable upon fencing, telegraph poles or the like, it is customary to loopthe wire about the post and secure it by a clamp 14:. After the wire has been pulled taut to as great an extent as is possible by a suitable'fwire tightening or tensioning device, the loop around the anchor 10' is twisted to increase the tension and take up the last remaining slack. This is accomwhere they meet and drawingthesame to gether. Thepresent device is intended to be employed for that-purpose. After the 3-1: loop has been closed by drawing the ends toplished by gripping the two ends of the loop gether, an additional clamp is added tain the wireinthat condition y i -As shown herein, the clamping devicein- 4 cludes ,a tube lfihaving an elongated slot1l6 extending substantially throughoutits length: The tube15 forms at oneendthereof a hearing forthe body portion 17 of the screw'shaftl8. Said, screw shaft extends through the tube and has a reducedoylindricalportion 19 V which isthreaded on its end at-20 to receive a washer 21 and n'ut 22. ."Saidscrew shaftprojects beyond the other endof' the tube and is transversely apertured as at 23 and provided with a locking screw 24 forsecuring the aperture the'handle 25,

A cable clamping jaw 26, provided with-a body portion 27, is slidably'mounted in'the tube 15 so; asto protrude through the slotilfi therein. Said jaw is internally threaded asat 28 to receive the'screw shaft 18. "Rota tion of the screw shaft by the handle: 25,

therefore, will cause axial-reciprocation of the jaw'relative to the screw and-tube.

Fixedly mounted within the tube 15 and projecting therefrom there is a fixed; jaw 29 which is secured in placeby the pin .31 and has, a body portion within the tubel'which acts as a bearing, as indicated at SO for the.-

screwshaft; Said screw shaft is'rotatably 1nounted-at 19qin saidlbearing,ibut ismain-' tamed against longitudinal-movement with respectthereto. The movable jaw 26 is pro- Vided with a gr1pping recess as indicated' at formedbytheupwardly angularly direct} I v 2 ed spacedprojections 132 havingthe groove 232therebetween. "The fixed jaw 29. is.pr o-- Vided with a downwardlyandrearwardly exk end rip g ur s 3 m ero -i-i tion 133,; SaidjaW- 29 is bifurcated torfeoeive therebetween thec am;like wedge 34 which, is

pivoted; therein at 3.5; and provided with, the,

ratchet teeth or suitably serrated:{surface Extending. rearwardly from said wedge,"

when in norinal position, there i is-providedaj tall 37 which may be manuallyf'engaged to throw the wedge*upwardly:out o-foperative 1 normallyremains in operative position by";

gravity, although a suitable spring may be employed if desired for that purpose.

The width of the wedge cam is slightly less than the width of the slot 232 so that the projections 132 may straddle the cam 34 when the two. jaws are positioned in their closest relationship.

It will be noted that by reason of the above construction, upon the jaw 26 moving the cable into engagement with the wedge 34, said cable will engage the teeth 36 thereof and force the same rearwardly about the pivotal mounting 35. Said action will turn the wedge 34 about its pivotal mounting so that the forward toothed face thereof will be brought downwardly into cable clamping Thus, in addition to the clamping position. action effected by the movement of the jaw 26, there will be a wedging action caused by the camlike wedge 34 and the gripping action caused by the teeth 36 thereon. If it is desired to employ merely the clamping jaws without the wedge 34,'the tail37 thereof may I be swung upwardly about the pivotal mounting out of the way of the clamping action.

In addition to the device being employed as a cable clamp, it may be used as a clamp or vise for other articles as well.

The invention claimed is: V

1. In a vise the combination of a jaw including two surfaces angular to each other an'dinclined to the line of jaw movement, a wedging cam cooperating therewith for increasing the pressure upon movement of said jaw'toward said cam and a stationary surface for work clamping association with the cam and the angular surfaces of said aw.

2. In a vise the combination of a jaw in-' cluding two surfaces angular to each other and inclined to the llne of jaw movement, a

wedging cam cooperating therewith for in-' creasingthe pressure upon movement of said jaw toward said cam, a stationary surface for work clamping association with the cam and the angular surfaces of said jaw, means pivotally supporting said wedging cam and straddling the same and a pair of spaced ,.pr0jections arranged to straddle said cam when the jaw and cam are positioned in the closest relationship, portions of said projectionsproviding one of said angular surfaces;

'3. In a'vise the" combination of a movable jaw including two article engageable "sur faces angular of each other, an article engageab'le surface and a cam Wedge including an article engagement surface progressively engageable thereby for progressively article clamping in the jaw movement.

In wltnesswhereof, I have my s gnature;

V FREDBICK wf Corrine.

hereunto affixed

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